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- W2349563344 abstract "Problems of air flow and contamination's dispersion were studied under the model of natural ventilation for tunnel with shafts.A main body tunnel between any two adjacent shafts was taken as a control volume.Premising one-dimensional and incompressible,each control volume's air flow motion equations were established and solved,which were based on methods of mass and energy conservation.Contamination's dispersion equations of each control volume were established,premising that turbulence inside the tunnels was caused by atmospheric turbulence and vehicle's movement.Local-unidirectional assuming was used as the outlet boundary.A calculated example showed: a law of cyclic variation appeared in the air velocity of each control volume's cross-section,also in the draught of each shaft.When vehicle's velocity was faster,Shafts would help to decrease CO concentration of tunnel's interior and its outlet.While vehicle's velocity was lower,irrational layouts of shafts would suppress the contamination's dispersion in tunnel." @default.
- W2349563344 created "2016-06-24" @default.
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- W2349563344 date "2009-01-01" @default.
- W2349563344 modified "2023-09-26" @default.
- W2349563344 title "Studying on Air Flow and Pollution of Natural Ventilation Tunnel with Shafts" @default.
- W2349563344 hasPublicationYear "2009" @default.
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